Passat (B5) :: Coolant Leak From Hose?
Mar 25, 2009
I think that it is coming from the hose that connects right to the reservoir. I have wiped it clean a few times and it always seems to be seeping from that area under the hose where it connects to the bung. I replaced the OE hose clamp with a new one and put some electrical tape around the hose but it still leaks. It does make a slight hissing sound from the area as well when I pop the hood after a long ride, but only lets off a few drips. My guess is that I may have to replace that entire hose but that looks involved as it is attached to several others.
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I have noticed my 2007 SF V6's coolant is reducing at reservoir. I added premix coolant about 1 liter a month ago. Today I saw my driveway was wet, and this hose end was leaking.
I turned the spring clamp about 90 degree. but it's still dropping like 1 drop per 1 minute or so. Is this common issue? and how can I fix this?
Should I change the black hose? or change the same new spring clamp or change the spring clamp to a wider screw clamp?
Also, when detach the hose end, some amount of coolant will come out then, just adding premix coolant into reservoir for the max level is good enough? or do I have to bleed radiator airs?
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My wifes 2002 gls has a coolant leak from the top radiator hose. I put a new hose on and two new clamps on the leaking end and it still leaks!! I have never seen anything like this and I am not sure how to stop it.
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The inter cooler to throttle body hose and it seems to have coolant all over it.
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I have a 1999 jeep cherokee 4x4 four liter inline 6. have a coolant drip at bottom radiator hose, change hose. but still drip. Could water pump be leaking. and it running down on the bottom radiator hose.
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I have coolant leaking from the bottom of this hose on my brothers car. I am not very familiar with the BEW's as I drive an ALH. Just looking for info about part number or name on this hose so I can get a new one. Has a part number MH3364 on it but that is not working anywhere.
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I just bought a used 09 yaris, 5 speed manual tranny. There seems to be a small coolant leak on the top hose coming from the radiator, the one that connects to a plastic flange or adapter and then go's to the engine block. The car does not get hot and it drive fine except it leaks at that spot. I try using a regular hose clamp and still leaked. Is the thermostat not opening up or is the water pump intermittent stopping? or something like that. Or maybe the hose itself is bad. Since this is a used car who knows what the previous owner did, I might change out the hose over the weekend and replace all the coolant to the correct Toyota long life system. to be on the safe side.
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Had a coolant leak I finally traced to the rubber hose on an egr delete (previous owner installed, not sure of brand). Looks like the jackwagon who installed it cranked the clamps way too tight and they eventually split the hose. I have a piece of heater hose that looks like the right diameter and cut to size should fit fine. I guess I am just looking for some reassurance that it would be ok to use in that situation...
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If you have a coolant leak at the y hose for the intake manifold and the thermostat, make sure you replace the upper radiator hose as well as the y hose.
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The oil cooler mounted above the oil filter on my 2002 Explorer 4.0L V6 has a major coolant leak on one of the external line/hose bib elbow. I've googled Explorer oil coolers and I've searched this forum with no luck. Can you bypass it without any problems mechanically or electronically (throwing error codes)? I have already purchased a new cooler and the lower oil cooler line. I'm just wondering if I should return the parts and bypass it. If I go through the replacement, I noticed the cooler is mounted by a pass through threaded tube with a hex head molded into it for fastening/loosening purposes. What size hex head socket it is?
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Just had to replace radiator at 38k on my 2012 SD. Now I have another leak at 41k. Looks like it's wherever the lower radiator hose leads. Kind of a weird junction. I don't think it's coming from above there, but not sure. It's the primary dgas bottle that was low. The radiator was covered under my ESP. We'll have to see what's up with this one. Been eying a denim blue SD at dealer, thinking this is going to talk me out of it though. Not especially happy right now.
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I'm trying to troubleshoot a leak on my 08' F250 with a 6.4 powerstroke. It's been dripping coolant when cold pretty aggressively. Once the truck heats up, the coolant leak seems to mostly go away.
Here's a picture of the drip, it's marked by a dart, so you can see the location from the top (second pic). The radiator house connection around the engine seems dry.
Pic from Top ....
What's hidden here that could be causing the leak?
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How to identify this 'leaking' coolant hose? (cooler hose?), I took a picture with my cell ... It shows a stainless steel coolant line with calcified Dried/heater coolant residue on the outside, and I noticed it was leaking coolant (using a periscope mirror )...
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I have a 2002 V6 Passat Wagon. I am hemorrhaging coolant out of my lower coolant pipe. I can reach it put my finger in a feel the coolant coming out as fast as I pour it in. I can't see any way to get at the pipe from the top and I can't see the hose that should be attached there from the top. I assume this means the front end will need to be jacked up and go at it from the bottom. Also note the intake and return from the heater in my car is mexi fixed and looped together (no heat).
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Well my wifes Passat blew a coolant hose and shut down. Now when you try and start it it makes a terrible clanking sound. I'm about to start tearing it apart today. She has the v6 30v...
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I have in the last 5000 miles had the timing belt changed and at same time the usual other item - water pump, Thermostat etc,, Engine has 155k on it.
I have had overheating issues that I thought was related to the viscous fan clutch and replaced that (it was bad) and the issue of overheating now just take longer to happen.
I have bled the coolant system and have good hot air out with heater - engine warms up within 1/2 mile of house. I am running right now Prestome all color antifreeze as it was overheating and and loosing liquid as a result.
In trouble shooting yesterday I find that when it now overheats it is leaking at the heater hose on drivers side of heater box. I have repositioned hose and clamp after bleeding it and it still overheats and with pressure build up leaks at this location - this happens when moving or when stationary.
With heat coming from heater box (both hoses get hot) and both fans working would this be bad thermostat? (again have heat) or a bad water pump?
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I went on vacation, my 2.0T B6 developed a coolant leak at 35k miles. It's still in the shop but the problem has been identified as a leaky o-ring located toward the rear of the engine at the block. The SA told me that they've see quite a few of these in both Audi and VW products using the 2.0T.
I'm also getting a reflash for one of the recalls. I think it's the 03 recall but I'm not sure until I get the paperwork. So off I go in my loaner PT cruiser until I get the B6 back today....
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So I started the car today, proceeded to back out, and the STOP: check coolant light message comes on. I check the coolant reservoir, and its near empty. Then I notice a puddle. Filled it back up and let it run for a bit. No leak. Looked at the front of the engine and didn't see any leaks.
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My buddy has a 2000 GLX that's been a great car, but he had an overheat situation where the car lost most all of the coolant almost instantaneously. I went over to his house to check it out, but was limited on time so I couldn't get the belly pan off and the car jacked up to thoroughly diagnose it. We filled it with distilled water and ran it so I could see where it was leaking. Seems to be gushing mostly from the back side of the engine (by the firewall) on the passenger side, but there also seems to be some leaking in the front as well.
What are the major failure points that could cause it to dump it as quickly as it's filled? Does the car have a distribution pipe like a VR that can be a major failure point? My experience is limited with the V6 engine.
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I started loosing a bunch of coolant on my tdi which is still under 36k and there is no visible leaks anywhere
Took the car to the dealer last night to get it checked out and they were ready to send me back home telling me there is no issue since they don't see any leaks under the car
Either way after telling them that I have already gone through 2 gallons of coolant they decided to top off the coolant and ask me to drive 200 miles.
I drove 156 miles last night since I need to get this issue resolved and now the coolant tank is empty again... sitting at the dealer while I'm typing this.
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New to posting to the forum but this is the first major problem I have had with my passat. It's a 97 vr6 and i have a major coolant leak above the oil pan somewhere it has already gone thru about a gallon of coolant today alone. I noticed it yesterday but it was small and i couldn't tell where it was coming from.
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